Only from watching the first episode I knew I would love it!!!
It gives me LITA vibes but the plot has nothing in common. First of all, the story is unconventional, really interesting and kind of mysterious.
I can definitely say that this isn't a series for people who like "slow burn" but as I see it, the fact that it has a fast plot matches its thyme.
Moreover, many people believe that there should have been more information about each character's life but, in my opinion this would have destroyed the suspense of the episodes. Making scenarios and trying to understand the characters' feelings and motivations it's much more interesting than knowing every single detail about their lives. (And that's what it makes it different from the other bl series.)